2012 saw its fair share of celebrities showing off their sexy curves in bikinis at the beach (and one-piece suits as well), but which stars were the sexiest of all?

Some were snapped by the paps, while others discovered the magic of Instagram and shared photos nearly every time they went, minimally clothed for some sun, sand & surf.

Stars like Kim Kardashian and Rihanna seemed to post their sexy shots the most, while supermodel Bar Refaeli shared lots of photos with her fans.

Britney Spears got her bod back to its rockin' old form; while Stephanie Seymour, 44, and Daisy Fuentes, 46, prov...

Tons of celebrities (and pseudo celebrities) attended the VH1 Divas 2012 concert held at the Shrine Auditorium in Los Angeles, Calif., on Sunday.

Stars paid tribute to legendary late entertainers Whitney Houston and Donna Summer. Jordin Sparks, who co-starred with Houston in her last film, "Sparkle," before her death in February performed a medley of the star's hits with Melanie Fiona and Ledisi - "I'm Every Woman," "I Wanna Dance With Somebody" and "How Will I Know."

Kelly Rowland, Adam Lambert and Keri Hilson honored Summer, who died in May, by performing "I Feel Love," "Bad Girls" and ...

The iHeart Radio Music Festival at the MGM Grand Hotel and Casino in Las Vegas, Nevada, was a star-studded event over the weekend.

There were appearances by Britney Spears, Olympic medalist Ryan Lochte, Miley Cyrus, Demi Lovato, the Jonas Brothers and many more!

Miley showed off her midsection in a black halfshirt and knee-length silver skirt with leopard-print heels.

Demi Lovato showed off her curves in a tight black dress with gold embroidery, while "Vampire Diaries" star Nina Dobrev opted for a trendy and short lace dress.

Check out more photos of the stars...

Demi Lovato

Nin...

Rihanna showed off a new pixie haircut on the red carpet at Thursday night's MTV Video Music Awards (VMAs) and Miley Cyrus took the plunge in another cleavage-baring gown.

Nicki Minaj looked like an arachnid, with a very black widow-like black and red dress; Katy Perry dazzled in a see-through black gown with a blue and red floral print.

Rapper Wiz Khalifa and fiancee Amber Rose announced their pregnancy by showing off her big belly; Alicia Keys opted for the Angelina Jolie Oscars look, showing off one leg through the slit in her dress; and Hollywood made its presence with stars Emma Wats...

Hot, young Hollywood stars showed up at Sunday night's 2012 Teen Choice Awards in Universal City, California.

Demi Lovato wore a short, daring black, gray and yellow dress with a feathered hemline. Hayden Panettiere glittered in a gorgeous purple sequin gown and matching pumps, while Meagan Good showed off her abs in a sexy white and gray pantsuit.

"Glee" star Lea Michele sizzled in a short strapless number, while singer Jordin Sparks wore a flouncy black dress with a plunging neckline.

Fan favorites Justin Bieber and girlfriend Selena Gomez opted to walk the red carpet solo. Check out a...

I got a chance to call in and have a candid interview with the fierce Kat Graham! She talks about her experiences in the music industry, being on tour, plus her passions that her fans don't know about. Check out her insights after the jump!

Q: Would your music ever be featured on The Vampire Diaries?

Kat Graham: I hope not. Unless "Kat Graham" visited The Vampire Diaries. I don't think Bonnie can sing my music. Not unless it's scoring music for the actual soundtrack, which I've done in the past. I'm not interested in singing my songs other than when I'm myself. Yea [laughs], I would rathe...

Vampire Diaries star Kat Graham is launching an assault on the pop charts after landing a record deal.

The former back-up dancer for acts like Missy Elliott and Pharrell Williams has also starred in music videos for Akon, Nelly, John Legend and Justin Bieber - and now she's preparing to carve out her own music career after signing a deal to release her first album.

In a video posted to YouTube.com, she tells fans, "I am so, so excited to share my big, special announcement with you guys. As you can see I'm in a recording studio... the reason is I am now signed to A&M/Octone Records."

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Check out the sexy new poster The CW just released for "The Vampire Diaries." Which team are you - Damon or Stefan? We can't decide!

Despite Elena’s efforts to keep Jeremy safe, he offers to help Damon and Alaric deal with Katherine in tonight's new episode.

Sheriff Forbes and Caroline share a few rare moments of quality mother/daughter time. Bonnie accidentally discovers new information about Mason and shares it with Stefan, leading Damon to take matters into his own hands.

Click for more great Nina Dobrev pictures: